Centrifugal oil-burner.



M. A. FESLBR.

CENTBIFUGAL OIL BURNER.`

APPLICATION FILED SEPT. 30, 1913. 1,1 1 3,108. Patented ont. 6, 1914.

2 SHEETS-SHEET 1.

man nx- M. A. FESLER.-

CENTBIFUGAL OIL BURNER.

APPLIQATION FILED s211130. 1913.

1,1 1 3, 1 08. 'Patented 00u. 6, 1914.

2 SHEETS-SHEET 2.

VITN ESSES: 1N VEN TOR %M Mw mgfsk UNrrED STATES PATENT oFFIoE.

MILTON A. FESIER, 0F SANFRANCISCO, CALIFORNIA, ASSIGNOR IO FESS SYSTEMC0., 0F SAN FRANCISCO, CALIFORNIA, A CORPORATION 0F CALIFORNIA.`

CENTBIFUGAL OIL-BURNER.

Specification of Letters Patent.

` Patented oct. 6, 1914..

Application led September 30, 1913. Serial No. 792,589.

T0 all whom 'it may concern.'

Be it known that I, MILTON A. FnsLER, a citizen of the United States,residing in the city and county ofy San' Francisco and State ofCalifornia, have invented new and useful Improvements in CentrifugalOil- Burners, of which the following is a speciication.

This invention relates to centrifugal oil burners and particularlypertains to improvements in oil burners such as are shown in PatentsNos. 1,026,663 and 1,064,467, issued to me March 21, 1912, and June 10,1913, respectively.

It is the object of this invention to provide an improvement in theconstruction of centrifugal oil burners by which a greater heatgeneration can be effected than is possible with the oil burners of thetypes shown in the above-mentioned patents.

Another object is to provide means in a centrifugal oil burner by whichvan increased atomization of fuel oil can be accomplished, and aconsequent more intense flame be obtained without necessitating theduplication of the burners.

Other objects will appear hereinafter.

The invention primarily resides in superposing a plurality ofcentrifugal distributing plates, means for delivering equalwand uniformquantities of oil fuel simultaneously to each of the plates, means forrotating the plates, and means for inducing a draft by the rotation ofthe plates.

The invention further consists of the parts and the construction and'combination of parts as' hereinafter more fully described and claimed,having reference to the accompanying drawings, in which,-

Figure 1 is a vertical section of the burner, showing the preferredform. Fig. 2 is a detail horizontal section on the line a-a of Fig. 1.Fig. 3 is a horizontal section on the line b-b of Fig. 1, with partsremoved. Fig. 4 is a vertical section showing the modification of theinvention.

In the drawings A represents a vertically disposed stationary standardhaving a head or disk 2 on its upper end. Surrounding the standard A isa revoluble tubular shaft 3;

adapted to be rotated from any suitable source of power, which in theform of the with the shaft 3 and is connected thereto by webs or vanes4', extending between the upper end `of the shaft 3 and the cylinder 4;the vanes 4 being preferably in the form of fan blades spaced anysuitable distance apart. The upper end of the cylinder 4 is spaced ashort distance below the outer periphery of the head 2 and is formedwith an outwardly extending flange 5, the upper edge of which flares ordiverges upwardly and outwardly, to form a lip 6.

Supported on spacing blocks.7 on `the flange 5, is an annulardistributing plate 8,

which plate is substantially ogee in cross section with its upperportion extending horizontally and with its outer eriphery terminatingapproximately parallel) with the divergent lip 6 on the flange 5. Thelower inner edge ofthe plate 8 is upturned to form an annular basin Qandisspaced from the standard A to form an annular air inlet passagecentrally of the plate 8.

Interposed between the upper face of the flange 5 and the underside ofthe horizontally extending portion of the plate 8 is a series of bladesor fans 10 spaced at suitable intervals apart; these blades 10 beingdesigned to induce a flow of air from the interior of the cylinder 4outwardly between the lip 6 and the outer edge of the plate 8. The edgeof the plate 8 is beveled on its underside, as indicated at 11, so as tocooperate with the lip 6 to direct the current of air leaving the spacebelow the plate 8 in an upward direction.

Superposed above the plate 8 is a second distributing plate 12,'which isalso ogee in cross sectionzwith -its outer periphery corresponding tothe periphery of the lower late 8, and spaced a short distance thererom;the plate 12 being supported upon spacing blocks 13 and rigidly attachedto the plate 8. A series of fan blades V14 is interposed between 8 and12 adjacent their outer edges; the inner edges of the blades 14 beinginwardly inclined to prevent oil from passing .thereon to the plate 12.The plate 12 is of a larger inside -diameter than the' plate 8, and itsinner margin is turned up abruptly to form an annular channel 15;

the inner edge of the plate 12 being thus offset in relation to theinner edge of the plate 8 and concentric therewith. Y

Supported onthe spacer blocks 16 a short distance above the upperdistributing plate `12, isa delector plate 17, which is arrangedimmediately below the head 2 1n close proximity thereto, with its outerperiphery in line with the outer edge of the plate 12. The underside ofthe head 2 diverges downwardly from its center, and the upper outer edgeof the plate 17 is beveled to parallel the vunder surface of the headand thereby form an outwardly and downwardly inclined annular passage.18 between the underside of the head 2 and the plate 17. The outerportions of the plates 12 and 17, extending in a horizontal direction,form a horizontal passage 19 therebetween, which passage constitutes anannular discharge for the fuel oil.

The fuel oil is delivered to the channels 9 and 15 on the lower inneredges ofthe plates 8 and 12 through a passage 20 'in the standard A,which passage connects at its lower end with a suitable source of fuelsupply and communicates with a horizontally extending manifold chamberv21 at a point between the lower edge of the plate 12 and the undersideof the plate 17. The manifold chamber 21 is formed in a stem B extendingdownwardly from the underside of the head 2 and connecting with thestandard A,

Leading from the manifold chamber 21, on the same plane, are tubes 22and 23 which are turned downwardly at their outer ends. The tube 22terminates above the channel 15 in close proximity thereto, and the tube23 terminates above the channel 9, a' short distance therefrom.

In the form of the invention just described, it will be seen that thedistributing plates 8 and 12 are connected to the revolubleshaft 3,through the cylinder 4 and vanes 4. By this construction it is necessaryto deliver the oil fuel to the distributing plates through the standardA or head 2. By connecting the distributing plates to the revolubleshaft 3 from above, as shown in Fig. 4, in which 24 indicates a spindleconnecting the upper edge of the shaft 3 to the plate 17, the fuel maybe delivered to the distributing plates through a pipe 20 connecting atits lower end with a suitable source of fuel supply and extend- Aingupward through the central opening of the plates 8 and 12 andterminating in a manifold pipe 21'; the tubes 22 and23 leading downwardfrom the manifold pipe 21. By this arrangement it is necessary todispense with the blades or vanes 4.

The following is the mode of operation of the apparatus: Fire is.started by anyk suitable means and the shaft 3 is set in motion anddriven in any suitable manner; oil being simultaneously supplied to thechannels 9 and 15 of the superposed plates 8 and 12 through the feedtubes 22 and 23;

miedos the quantity of oil delivered to each channel 9 and 15 being.equal by reason of the deliv- 'ery of fuel to bot-h feed tubes from thehorizontal manifold being the same. The shaft 3 on being rotated carriesthe distributing plates 8 and 12 therewith, thereby causing the oilsupplied tothe channels 9 and, 15 to fiow upward over the upper surfacesof the plates 8 and l2 and be discharged by the centrifugal forcethrough the spaces separating `the plate 8 from the plate 12 and theplate 12 from the plate 17. Simultaneously with the discharge of fueloil from the periphery of the plates 8 and 12, occurs a flow of air fromthe interior of the cylinder 4 through the passages between the flange 5and the lower plate 8, between the plate 8 and the plate 12, between theplate 12 and the plate 17, and between the plate 17 and the head 2;these currents of air being induced by the blades 4-10 and' 14. The airmay be supplied to the cylinder 4 in any suitable manner. The current ofair discharged below .the plate 8 is deflected upward by the lip 6 andthe current of air discharged from above the plate 17 is directeddownward by the passage 18, while the currents discharged from above andi below the intermediate plate 12 are directed horizontally. 'Ihehorizontal currents carry the oil which is discharged from the edges ofthe plates 8 and 12 in fine particles, and both are subjected to theaction of the upwardly and downwardly deflected air currents, whichcross the horizontal currents and lthereby insure a thorough atomizationof the oil and at the same time forcibly supply the oxygen to supportcombustion.

It has been found in practice that the amount of oil a single platerotating at a certain speed is capable of atomizing is limited, and thatany excess of oil above this amount will be thrown off in such manner asto prevent rapid and complete combustion thereof. For this reason theheat generating capacity of a burner having a single oil distributingplate is limited. By superposing a plurality of oil distributing plates,as herein set. forth, the larea of the distributing surface isincreased, thus enabling the production of a more intense heat fromasingle burner than when a single( distributing plate is used. Thisarrangement also avoids undesirable enlargement of the burner andrenders it compact by reason ofthe distributing plates being superposed;and thus enabling the increase of area of distributing surface withoutincrease in diameter of burner.

Having thus described my invention what I claim and desire to secure byLetters Patent, is

l. In a centrifugal oil burner, the combination of a rotary shaft,l aplurality of superposed oil distributing plates, intermediate means bywhich the plates are supported and driven, said plates having theirouter edges concentric and spaced apart, means for supplying oil to theinner peripheries of the plates, and means for delivering air above,below and between the plates.

2. In a centrifugal oil burner, the combination with a rotary shaft, ofa pair of superposed annular oil distributing plates, substantially ogeein cross section, carried by said shaft, vanes in the space between theplates, vanes below the lower plate, said latter vanes carried by theplates, and means for delivering corresponding quantities of oil to theinner margins of said plates.

3. The combination of a rotary shaft, a plurality of superposed oildistributing plates having their outer edges concentric, horizontallydirected and spaced apart, means carried by said shaft for supportingsaid plates and for delivering air above, between and below the same,means for downwardly directing the air supplied above the plates, meansfor upwardly directing the air supplied below the plates, and

zontally directed, said plates being substantially ogee in crosssection, a rotary shaft and intermediate means by which the plates aresupported and driven, means-to deliver oil between the plates, and meansto deliver air above, between and below the plates so as f to impingeupon the passing oil.

5. A centrifugal oil burner having an upper rotatin oil distributer anda lower rotating oil distributer, and means for delivering a co-actingail` blast between said distributers.

In testimony. whereof I have hereunto set my hand 1n the presence of twosubscribing witnesses.

MILTON A. FESLER.

Witnesses: i y

JOHN H. HERRING, W. W. HEALEY.

